Safe Drinking Water Information System (SDWIS) Federal Reporting Services

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PWS ID	IL0630650
PWS Name	SOUTH WILMINGTON
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	700
County Served	Grundy

The tables below list all violations that the state reported to EPA for this water system. Health-based violations are listed first, followed by treatment technique, MRDL, monitoring, reporting, and other violations.

Health-based	Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water. MCLs, MRDLs, and treatment technique rules are all health-based drinking water standards.
Maximum Contaminant Level or MCL	The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Treatment Technique	A required process intended to reduce the level of a contaminant in drinking water.
Maximum residual disinfectant level or MRDL	The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Monitoring & reporting	Failure to conduct regular monitoring of drinking water quality, as required by SDWA, or to submit monitoring results in a timely fashion to the primacy agency or EPA.
Public notification & other	Failure to provide notification to the public as required by the Violations of Public Notification Rule and the Consumer Confidence Report Rule, and violations of other requirements such as those violations related to variances and exemptions.

Violations

Violation Category Code	Violation Type Description	Rule Name	Contaminant Name	Violation ID	Compliance Status Description	Compliance Period Begin Date	Compliance Period End Date	Is Health Based Ind
RPT	Notification, Known or Potential LSL	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	7032435	Open	02-JUL-2025	-	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	7032436	Open	01-JUL-2025	-	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	7032434	Returned to Compliance	01-OCT-2024	31-DEC-2024	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	7032431	Returned to Compliance	01-JUL-2024	30-SEP-2024	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7032432	Returned to Compliance	01-JUL-2024	30-SEP-2024	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	7032425	Returned to Compliance	01-JUL-2022	30-SEP-2022	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7032426	Returned to Compliance	01-JUL-2022	30-SEP-2022	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7032423	Returned to Compliance	01-APR-2022	30-JUN-2022	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	7032422	Returned to Compliance	01-APR-2022	30-JUN-2022	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7032418	Returned to Compliance	01-JAN-2020	31-MAR-2020	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7032415	Returned to Compliance	01-APR-2019	30-JUN-2019	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7032413	Returned to Compliance	01-JAN-2016	31-DEC-2016	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7032411	Returned to Compliance	01-SEP-2015	31-AUG-2016	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	7032412	Returned to Compliance	01-SEP-2015	31-AUG-2016	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	7032409	Returned to Compliance	01-JUL-2014	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	7032407	Returned to Compliance	01-APR-2013	30-APR-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7032405	Returned to Compliance	01-JAN-2005	31-MAR-2005	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7032305	Returned to Compliance	01-OCT-2004	31-DEC-2004	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7032205	Returned to Compliance	01-JUL-2004	30-SEP-2004	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7031704	Returned to Compliance	01-APR-2004	30-JUN-2004	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	7031004	Returned to Compliance	09-JAN-2004	-	No
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7031204	Returned to Compliance	01-JAN-2004	31-MAR-2004	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7030704	Returned to Compliance	01-OCT-2003	31-DEC-2003	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7030404	Returned to Compliance	01-JUL-2003	30-SEP-2003	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7030103	Returned to Compliance	01-APR-2003	30-JUN-2003	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7029803	Returned to Compliance	01-JAN-2003	31-MAR-2003	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	7029503	Returned to Compliance	01-OCT-2002	31-DEC-2002	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	5441402	Returned to Compliance	01-JAN-2002	30-SEP-2002	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	5332601	Known	01-JUN-2001	30-JUN-2001	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	5247201	Returned to Compliance	01-OCT-2000	30-SEP-2002	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	4028998	Returned to Compliance	08-DEC-1997	07-DEC-2001	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	5388997	Returned to Compliance	01-NOV-1996	30-SEP-2000	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	3869597	Returned to Compliance	01-OCT-1996	30-SEP-2000	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	2981795	Returned to Compliance	07-JUN-1995	02-APR-1997	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	1642793	Returned to Compliance	22-OCT-1992	21-OCT-1996	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	244384	Returned to Compliance	16-APR-1984	15-APR-1988	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	7029380	Known	30-JUN-1977	29-JUN-1981	No

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Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
6936573	7032436	SIE	State Public Notification requested	29-JUL-2025	State	-
6936571	7032435	SIE	State Public Notification requested	03-JUL-2025	State	-
6936567	7032431	SIF	State Public Notification received	02-JUN-2025	State	-
6936568	7032432	SIF	State Public Notification received	02-JUN-2025	State	-
6936566	7032434	SOX	State Compliance achieved	10-APR-2025	State	-
6936555	7032425	SIF	State Public Notification received	26-JUN-2023	State	-
6936553	7032426	SOX	State Compliance achieved	24-OCT-2022	State	-
6936546	7032423	SOX	State Compliance achieved	29-JUL-2022	State	Collected on time, results late
6936546	7032422	SOX	State Compliance achieved	29-JUL-2022	State	Collected on time, results late
6936530	7032418	SOX	State Compliance achieved	23-APR-2020	State	-
6936525	7032415	SOX	State Compliance achieved	17-JUL-2019	State	Combined radium results received 7/17/19.
6936522	7032412	SOX	State Compliance achieved	07-SEP-2017	State	-
6936522	7032411	SOX	State Compliance achieved	07-SEP-2017	State	-
6936520	7032413	SOX	State Compliance achieved	02-FEB-2017	State	Sample data for TP01 submitted on 2/2/17, no PN required letter sent 2/3/17. pc
6936511	7032409	SOX	State Compliance achieved	23-JUN-2015	State	-
6936508	7032407	SIF	State Public Notification received	30-MAY-2013	State	-
6936505	7032405	SIF	State Public Notification received	13-APR-2005	State	-
6936005	7032305	SIF	State Public Notification received	07-FEB-2005	State	-
6936305	7032205	SOX	State Compliance achieved	11-JAN-2005	State	January 11th, 2005 sample returned the average beneath the MCL. gf
6936305	7031704	SOX	State Compliance achieved	11-JAN-2005	State	January 11th, 2005 sample returned the average beneath the MCL. gf
6936305	7031204	SOX	State Compliance achieved	11-JAN-2005	State	January 11th, 2005 sample returned the average beneath the MCL. gf
6936305	7030704	SOX	State Compliance achieved	11-JAN-2005	State	January 11th, 2005 sample returned the average beneath the MCL. gf
6936305	7030404	SOX	State Compliance achieved	11-JAN-2005	State	January 11th, 2005 sample returned the average beneath the MCL. gf
6936305	7030103	SOX	State Compliance achieved	11-JAN-2005	State	January 11th, 2005 sample returned the average beneath the MCL. gf
6936305	7029803	SOX	State Compliance achieved	11-JAN-2005	State	January 11th, 2005 sample returned the average beneath the MCL. gf
6936305	7029503	SOX	State Compliance achieved	11-JAN-2005	State	January 11th, 2005 sample returned the average beneath the MCL. gf
6936305	5247201	SOX	State Compliance achieved	11-JAN-2005	State	January 11th, 2005 sample returned the average beneath the MCL. gf
6936305	3869597	SOX	State Compliance achieved	11-JAN-2005	State	January 11th, 2005 sample returned the average beneath the MCL. gf
6936305	1642793	SOX	State Compliance achieved	11-JAN-2005	State	January 11th, 2005 sample returned the average beneath the MCL. gf
6936305	5388997	SOX	State Compliance achieved	11-JAN-2005	State	January 11th, 2005 sample returned the average beneath the MCL. gf
6935405	4028998	SOX	State Compliance achieved	08-OCT-2004	State	-
6935405	5441402	SOX	State Compliance achieved	08-OCT-2004	State	-
6933204	7031004	SIA	State Violation/Reminder Notice	17-MAR-2004	State	-
681401	5332601	SIE	State Public Notification requested	15-AUG-2001	State	-
6358697	2981795	SOX	State Compliance achieved	02-APR-1997	State	-
1018288	244384	SOX	State Compliance achieved	23-JUN-1986	State	-

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL 1 (22046) USED BY FIRE DEPT	20676	Yes	Well	Ground water	Other	Inactive
WELL 5 (01365)	32309	Yes	Well	Ground water	Permanent	Active
WELL 4 (22048)	20678	Yes	Well	Ground water	Permanent	Active
WELL 3 (22047)	20677	Yes	Well	Ground water	Permanent	Active
SOUTH WILMINGTON	23781	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	46078	No	Distribution System/Zone	-	-	Active
GENERIC FINISHED SAMPLING STATION	27440	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	29862	No	Sampling Station	-	-	Active
ELEV1-125K GALLON ELEVATED TANK	11205	No	Storage	-	-	Active
DISTRIBUTION GROUND STORAGE	12186	No	Storage	-	-	Inactive
TAP 01 GROUND STORAGE	12791	No	Storage	-	-	Inactive
TP 01-ION EXCHANGE PLT W3,W4,W5	15495	No	Treatment Plant	-	-	Active

1 - 12 of 12

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 01-ION EXCHANGE PLT W3,W4,W5	15495	Gaseous Chlorination, Pre	Taste / odor control
TP 01-ION EXCHANGE PLT W3,W4,W5	15495	Aeration, Slat Tray	Iron removal
TP 01-ION EXCHANGE PLT W3,W4,W5	15495	Aeration, Slat Tray	Organics removal
TP 01-ION EXCHANGE PLT W3,W4,W5	15495	Gaseous Chlorination, Post	Disinfection
TP 01-ION EXCHANGE PLT W3,W4,W5	15495	Ion Exchange	Radionuclides removal
TP 01-ION EXCHANGE PLT W3,W4,W5	15495	Inhibitor, Polyphosphate	Corrosion control

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For more information on a Water System:
Ask the operators of your water system, contact your primacy agency or file a Freedom of Information Act (FOIA) request.
Drinking water in general: Find out more about your drinking water web site or call the Safe Drinking Water Hotline (1-800-426-4791). EPA has also prepared a table about various regulated drinking water contaminants.
Tools for accessing EPA drinking water data: Safe Drinking Water Information System (SDWIS) Federal Reporting Services and Drinking Water Performance and Results Report.
Research Data: As well as monitoring the levels of drinking water contaminants for which EPA has set standards, EPA, states, and water systems also carry out studies of contaminants that may need to be regulated in the future. For more information about these contaminants, please see the National Contaminant Occurrence Database.

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